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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 | 1x 1x 1x 1x 1x 1x 1x 20x 20x 20x 20x 19x 19x 1x 18x 2x 16x 15x 1x 14x 1x 13x 13x 13x 13x 5x 2x 2x 2x 2x 2x 1x 12x 4x 4x 1x 11x 11x 11x 11x 11x 18x 5x 13x 13x 13x 13x 13x 13x 11x 1x 10x 10x 10x 10x 10x 2x 2x 1x | const { DynamoDBClient } = require('@aws-sdk/client-dynamodb')
const {
DynamoDBDocumentClient,
GetCommand,
UpdateCommand,
QueryCommand
} = require('@aws-sdk/lib-dynamodb')
const { requirePermission } = require('../utils/requirePermission')
const { validateFieldReference } = require('./reference-validation')
const client = new DynamoDBClient({})
const docClient = DynamoDBDocumentClient.from(client)
const updateItemHandler = async (event) => {
try {
const entityId = event.pathParameters?.entityId
const id = event.pathParameters?.itemId
const body = JSON.parse(event.body || '{}')
const flowId = event.requestContext?.authorizer?.claims?.['custom:flowId']
if (!flowId) {
return {
statusCode: 401,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Missing flow context' })
}
}
if (!entityId || !id) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Missing entityId or id' })
}
}
// Verify item exists and ownership
const result = await docClient.send(
new GetCommand({
TableName: process.env.TABLE_NAME,
Key: { entityId, id }
})
)
if (!result.Item) {
return {
statusCode: 404,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Item not found' })
}
}
// Only owner flow can update
if (result.Item.flowId !== flowId) {
return {
statusCode: 403,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Access denied - only owner can update' })
}
}
// Fetch entity to get field definitions for uniqueness validation
const entityResult = await docClient.send(
new GetCommand({
TableName: process.env.ENTITIES_TABLE_NAME,
Key: { id: entityId }
})
)
const fields = entityResult.Item?.fields || []
// Check uniqueness for fields with unique: true (exclude current item)
const data = body.data || {}
for (const field of fields) {
if (!field.unique) continue
const value = data[field.fieldId]
Iif (value === undefined || value === null || value === '') continue
const existing = await docClient.send(
new QueryCommand({
TableName: process.env.TABLE_NAME,
KeyConditionExpression: 'entityId = :eid',
FilterExpression: '#fieldId = :fieldValue',
ExpressionAttributeNames: { '#fieldId': field.fieldId },
ExpressionAttributeValues: { ':eid': entityId, ':fieldValue': value }
})
)
// Exclude the current item from the conflict check (sort key cannot appear in FilterExpression)
const conflict = existing.Items?.some((item) => item.id !== id)
if (conflict) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'UNIQUE_FIELD_CONFLICT', fieldId: field.fieldId })
}
}
}
for (const field of fields) {
const referenceCheck = await validateFieldReference({
docClient,
field,
value: data[field.fieldId],
flowId,
flowMembershipsTableName: process.env.FLOW_MEMBERSHIPS_TABLE_NAME,
itemsTableName: process.env.TABLE_NAME
})
if (!referenceCheck.valid) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({
error: referenceCheck.error,
fieldId: referenceCheck.fieldId,
referenceType: referenceCheck.referenceType
})
}
}
}
// Build update expression from body.data
const updateExpressions = []
const expressionAttributeNames = {}
const expressionAttributeValues = {}
let attrIndex = 0
for (const [key, value] of Object.entries(data)) {
// Skip reserved and auto-managed fields (updatedAt is hardcoded below)
if (['entityId', 'id', 'flowId', 'createdBy', 'createdAt', 'updatedAt'].includes(key)) {
continue
}
const nameKey = `#attr${attrIndex}`
const valueKey = `:val${attrIndex}`
updateExpressions.push(`${nameKey} = ${valueKey}`)
expressionAttributeNames[nameKey] = key
expressionAttributeValues[valueKey] = value
attrIndex++
}
if (updateExpressions.length === 0) {
return {
statusCode: 400,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'No fields to update' })
}
}
updateExpressions.push('#updatedAt = :updatedAt')
expressionAttributeNames['#updatedAt'] = 'updatedAt'
expressionAttributeValues[':updatedAt'] = new Date().toISOString()
const updateResult = await docClient.send(
new UpdateCommand({
TableName: process.env.TABLE_NAME,
Key: { entityId, id },
UpdateExpression: 'SET ' + updateExpressions.join(', '),
ExpressionAttributeNames: expressionAttributeNames,
ExpressionAttributeValues: expressionAttributeValues,
ReturnValues: 'ALL_NEW'
})
)
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify(updateResult.Attributes)
}
} catch (error) {
console.error('Error:', error)
return {
statusCode: 500,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify({ error: 'Failed to update item' })
}
}
}
// Wrap with permission check: require 'items:{itemId}:update' permission
exports.handler = requirePermission(updateItemHandler, {
permission: (event) => `items:${event.pathParameters?.itemId}:update`
})
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